mineral

Quartz-rich pebble, likely milky quartz

Quartz (SiO₂), possibly weathered quartzite or chalcedony

AI-generated identification · may be incorrect

Creamy white to honey-colored, translucent, with a vitreous to dull weathered luster and irregular fracture; quartz hardness is Mohs 7, with no cleavage and specific gravity about 2.65. The small rounded shape indicates natural abrasion or tumbling.

Identified August 26, 2026More mineral →

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Physical properties

Formation & geological history

Quartz commonly crystallizes from silica-rich igneous or hydrothermal fluids; quartzite forms when sandstone is metamorphosed. Its exact geological age and origin cannot be determined from the photograph alone.

Uses & applications

Common quartz is used in glass, ceramics, abrasives, electronics, and engineered stone; attractive pieces may be used as low-cost display or craft specimens.

Geological facts

The pale coloration may result from microscopic fluid inclusions, weathering, or iron staining. A steel knife should not scratch fresh quartz, while quartz can scratch ordinary glass.

Field identification & locations

Common worldwide in stream gravels, veins, beaches, and weathered rock; inspect for conchoidal fracture and test hardness, streak, and translucency. The image does not clearly show diagnostic features for a more specific identification.